1.( 10 : 1/2 ) x ... = 120 2.( 1/5 x ... ) - 10 = 5x4 TULIS DENGAN CONTOHNYA

1.(10:1/2)X...=120
       20   X...=120
    120:20=6
2.(1/5X...)-10=5X4
   (1/5X...)-10=20
   (1/5X...)=20+10
   (1/5X...)=30
   30:1/5=150

1. (10 : 1/2) x ... = 120
    (10 : 1/2 = 5) x .... = 120
   20 x ... = 120
    ... = 120 : 20 = 6
Jadi jawabannya 6

2. (1/5 x ...) - 10 = 5x4
    (1/5 x ...) = 5 x 4 + 10
    (1/5 x ...) = 30
    (1/5 x ...) = 30 x 5/1 = 150
Jadi jawabannya 150